Optical structure for reducing sharpness of low beam cutoff line, vehicle lamp and automobile
By setting a diffuser and designing a pattern on the inner surface of the reflector, the direction and intensity of light propagation are changed, solving the problem of excessive sharpness of the near beam cutoff line, achieving a softer and more uniform light distribution, and reducing visual fatigue and glare interference.
Patent Information
- Application Number
- CN202423237096.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
The low beam cutoff line of existing vehicle lights is too sharp, causing driver visual fatigue and pedestrian glare.
A light-scattering section is set on the inner surface of the reflector, and a pattern is designed on its surface to scatter light, change the propagation direction and illumination intensity of the reflected light, and make the light softer and more uniform in the cutoff line area through the imaging principle of the lens.
It reduces the sharpness of the low beam cutoff line, thereby reducing driver visual fatigue and glare interference from oncoming pedestrians.
Smart Images
Figure CN223595717U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to vehicle lighting technical field, especially a kind of optical structure of reducing low beam cutoff line sharpness, car light and car. BACKGROUND
[0002] With the rapid development of automobile lamp technology, people pay more and more attention to the use of car light, and the requirements are getting higher and higher. In addition to meeting the minimum value requirements of a specific area, ensuring the lighting field and brightness of the driver, the shape of the low beam cutoff line and the maximum value requirements of a specific area must also be met. Among them, the higher the sharpness of the cutoff line of the low beam (i.e. the clearer), the more likely it is to cause visual fatigue to the driver, and it is easy to cause dazzling to the opposite pedestrians or drivers. SUMMARY
[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, the utility model provides an optical structure for reducing the sharpness of the low beam cutoff line, which can effectively reduce the sharpness of the low beam cutoff line.
[0004] The utility model further provides a car light using the above-mentioned optical structure for reducing the sharpness of the low beam cutoff line.
[0005] The utility model further provides a car using the above-mentioned car light.
[0006] According to the optical structure for reducing the sharpness of the low beam cutoff line according to the first aspect of the utility model, the lens, the reflector, the LED light source and the baffle are provided, the reflector is located behind the lens, the LED light source is located below the reflector, the LED light source emits light to the inner surface of the reflector to reflect onto the lens, the baffle can block part of the light to form a cutoff line area on the lens, the inner surface of the reflector is provided with a diffuser, the diffuser can scatter the light to the cutoff line area, and the surface of the diffuser is provided with a pattern to constitute scattering of the light.
[0007] The optical structure for reducing the sharpness of the low beam cutoff line according to the above-mentioned embodiment of the utility model has at least the following beneficial effects:
[0008] The optical structure for reducing sharpness of low beam cutoff line provided by the embodiment of the utility model reduces the sharpness of low beam cutoff line by setting the astigmatic part on the position corresponding to the cutoff line area of the inner surface of the reflector, and the surface of the astigmatic part is provided with patterns, so that when the light emitted by the LED light source falls on the astigmatic part, the light is scattered by the patterns, the initial propagation direction and the irradiation intensity of the reflected light are changed, the light reflected by the astigmatic part is reflected again, the image of the astigmatic part is finally located near the cutoff line area according to the imaging principle of the lens, the light reaching the cutoff line area is more soft and uniform, the overall brightness ratio of the cutoff line area is reduced, the sharpness of the low beam cutoff line is reduced, the visual fatigue of the driver caused by the high sharpness of the low beam cutoff line is effectively reduced, and the glare interference on the pedestrians and the oncoming drivers is reduced.
[0009] According to some embodiments of the utility model, the patterns include a plurality of stripes protruding outward from the surface of the astigmatic part.
[0010] According to some embodiments of the utility model, the astigmatic part is provided with a plurality of groups of the stripes, and the distances between the stripes in the same group are equal.
[0011] According to some embodiments of the utility model, the astigmatic part is provided with two groups of the stripes intersecting with each other, so as to divide the surface of the astigmatic part into a plurality of prismatic parts.
[0012] According to some embodiments of the utility model, the patterns include skin patterns distributed on the surface of the astigmatic part.
[0013] According to some embodiments of the utility model, the astigmatic part is a rectangular area arranged at the bottom of the inner surface of the reflector, and is symmetrically distributed with respect to the center line of the reflector.
[0014] According to some embodiments of the utility model, the inner surface of the reflector has an elliptical contour or a parabolic contour, the reflector has a first focal point and a second focal point, the LED light source is arranged at the first focal point, and the baffle is arranged at the second focal point.
[0015] According to the vehicle lamp provided by the second aspect of the utility model, the optical structure for reducing sharpness of low beam cutoff line is used, so that the sharpness of the low beam cutoff line is reduced, the visual fatigue of the driver caused by the high sharpness of the low beam cutoff line is effectively reduced, and the glare interference on the pedestrians and the oncoming drivers is reduced.
[0016] According to the vehicle lamp provided by the above embodiments of the utility model, at least the following beneficial effects are achieved:
[0017] The vehicle lamp provided by the embodiment of the utility model reduces the sharpness of the low beam cutoff line by setting the astigmatic part on the inner surface of the reflector corresponding to the position of the cutoff line area, and the surface of the astigmatic part is provided with patterns, so that when the light emitted by the LED light source falls on the astigmatic part, the light is scattered by the patterns, the initial propagation direction and the irradiation intensity of the reflected light are changed, the light is reflected by the astigmatic part, and then the imaging principle of the lens is used to make the image of the astigmatic part finally fall near the cutoff line area, so that the light reaching the cutoff line area is softer and more uniform, the overall brightness ratio of the cutoff line area is reduced, the sharpness of the low beam cutoff line is reduced, the visual fatigue of the driver caused by the high sharpness of the low beam cutoff line is effectively reduced, and the glare interference on the pedestrians and the oncoming drivers is reduced.
[0018] According to the third aspect of the utility model, a kind of car is provided, including the vehicle lamp as described in the second aspect of the utility model.
[0019] According to the car of the above embodiment of the utility model, at least has following beneficial effects:
[0020] The vehicle lamp used by the car provided by the embodiment of the utility model reduces the sharpness of the low beam cutoff line by setting the astigmatic part on the inner surface of the reflector corresponding to the position of the cutoff line area, and the surface of the astigmatic part is provided with patterns, so that when the light emitted by the LED light source falls on the astigmatic part, the light is scattered by the patterns, the initial propagation direction and the irradiation intensity of the reflected light are changed, the light is reflected by the astigmatic part, and then the imaging principle of the lens is used to make the image of the astigmatic part finally fall near the cutoff line area, so that the light reaching the cutoff line area is softer and more uniform, the overall brightness ratio of the cutoff line area is reduced, the sharpness of the low beam cutoff line is reduced, the visual fatigue of the driver caused by the high sharpness of the low beam cutoff line is effectively reduced, and the glare interference on the pedestrians and the oncoming drivers is reduced.
[0021] Additional aspects and advantages of the utility model will be in part apparent and in part pointed out hereinafter in the description of the utility model, some will become apparent from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0022] The utility model will be further described below in combination with drawings and embodiments, wherein:
[0023] Figure 1 It is the schematic view when the optical structure of the embodiment of the utility model for reducing the sharpness of low beam cutoff line is not provided with astigmatic part;
[0024] Figure 2 It is the schematic view when the optical structure of the embodiment of the utility model for reducing the sharpness of low beam cutoff line is provided with astigmatic part;
[0025] Figure 3A partial schematic view of the optical structure for reducing sharpness of the low beam cutoff line of the embodiment of the present application;
[0026] Figure 4 A schematic view of the reflector of the embodiment of the present application;
[0027] Figure 5 A schematic view of another arrangement of the baffle of the embodiment of the present application;
[0028] Figure 6 A schematic view of the car light of the embodiment of the present application.
[0029] In the drawings:
[0030] Lens 100; reflector 200; astigmatic part 210; LED light source 300; baffle 400; main body 500; circuit board 600; heat sink 700. DETAILED DESCRIPTION
[0031] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.
[0032] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by the upper, lower, front, rear, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0033] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is two or more, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, etc., it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0034] In the description of the utility model, unless otherwise explicitly limited, the words of setting, installing, connecting and the like should be understood broadly, and the skilled in the art can determine the specific meaning of the above words in the utility model in combination with the specific content of the technical scheme.In the description of the utility model, the description of reference terms "one embodiment", "some embodiments", "illustrative embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the utility model.In the description of the utility model, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.
[0035] With reference to Figures 1 to 4 According to the optical structure for reducing sharpness of low beam cutoff line provided by the first aspect of the utility model, the lens 100, the reflector 200, the LED light source 300 and the baffle 400 are included, the reflector 200 is located at the back of the lens 100, the LED light source 300 is located below the reflector 200, the LED light source 300 emits light to the inner surface of the reflector 200 to reflect on the lens 100, the baffle 400 can shield part of light to form a cutoff line area on the lens 100, the inner surface of the reflector 200 is provided with the astigmatism part 210, the astigmatism part 210 can scatter light to the cutoff line area, the surface of the astigmatism part 210 is provided with patterns to constitute scattering of light.
[0036] It can be understood that the optical structure for reducing sharpness of low beam cutoff line provided by the embodiment of the utility model reduces the sharpness of low beam cutoff line by setting the astigmatic part 210 on the inner surface of the reflector 200 corresponding to the position of the cutoff line area, and the surface of the astigmatic part 210 is provided with patterns, so that when the light emitted by the LED light source 300 falls on the astigmatic part 210, the light is scattered by the patterns, the initial propagation direction and the irradiation intensity of the reflected light are changed, and after being reflected by the astigmatic part 210, the image of the astigmatic part 210 finally falls near the cutoff line area, so that the light reaching the cutoff line area is more soft and uniform, the overall brightness ratio of the cutoff line area is reduced, the sharpness of the low beam cutoff line is reduced, the visual fatigue of the driver caused by the high sharpness of the low beam cutoff line is effectively reduced, and the glare interference on the pedestrians and the oncoming drivers is reduced.
[0037] Further, according to some embodiments of the utility model, the patterns include a plurality of stripes protruding outward from the surface of the astigmatic part 210.
[0038] It can be understood that the patterns adopt the stripe form, which can simplify the design and facilitate the overall structure of the reflector 200, and further, the stripes can adopt the concave or convex form, and the concave depth or convex height of the stripes can be determined according to the actual use requirement, for example, the convex height of the stripes can be 0.001mm~0.01mm, and 0.006mm is appropriate, and at the same time, the width of the stripes can be designed with reference to the height. Such a design style can form a slight scattering of light, thereby softening the overall irradiation of the low beam lamp and improving the lighting effect.
[0039] Further, according to some embodiments of the utility model, the astigmatic part 210 is provided with a plurality of groups of stripes, and the spacing between the stripes in the same group is equal, thereby forming various regular pattern shapes.
[0040] Further, according to some embodiments of the utility model, the astigmatic part 210 is provided with two groups of stripes intersecting with each other, so as to divide the surface of the astigmatic part 210 into a plurality of prismatic parts.
[0041] It can be understood that the above design can make the patterns formed by the stripes have uniform scattering effect, and the overall processing design is simple, the appearance of the reflector 200 is neat, and the comfort of the low beam lamp irradiation can be improved. By adding the diamond pattern on the surface of the astigmatic part 210, the light reflected by the astigmatic part 210 is scattered, the light type is more uniform, and the low beam cutoff line is blurred to a certain extent.
[0042] Further, according to some embodiments of the utility model, the patterns include skin patterns distributed on the surface of the astigmatic part 210.
[0043] It can be understood that the skin texture as a microstructure design can form irregular reflecting surfaces on the surface of the diffusing portion 210, and such surface features can make the light emitted from the LED light source 300 be scattered at multiple angles when contacting the diffusing portion 210, instead of being reflected in a single direction, so that the light is more uniformly distributed when reaching the lens 100, further reducing the sharpness of the low beam cutoff line, thereby reducing the glare effect on the driver and other road users.
[0044] It should be noted that, for the pattern of the pattern, in addition to the above-mentioned embodiments, other different patterns can be designed, which can be determined according to actual conditions, and the diffusing portion 210 can also be designed in other diffusing structures, such as shielding aluminum plating, which can be determined according to actual conditions, and will not be described here.
[0045] Further, according to some embodiments of the present application, the diffusing portion 210 is a rectangular area arranged at the bottom of the inner surface of the reflector 200, and is symmetrically distributed with the center line of the reflector 200.
[0046] It can be understood that such a layout design can make the light reflected by the diffusing portion 210, and then by the imaging principle of the lens 100, so that the image of the diffusing portion 210 finally falls near the cutoff line area, thereby enhancing the brightness of the dark area above the low beam cutoff line and reducing the overall brightness ratio of the cutoff line area, thereby reducing the sharpness of the low beam cutoff line. At the same time, the mold design in the production process can be simplified, and the manufacturing cost can be reduced.
[0047] It should be noted that the actual size, shape and position of the diffusing portion 210 are not limited to the above-mentioned embodiments, and can be designed according to actual use requirements, which will not be described here.
[0048] Further, according to some embodiments of the present application, the inner surface of the reflector 200 has an elliptical profile or a parabolic profile, the reflector 200 has a first focal point and a second focal point, the LED light source 300 is arranged at the first focal point, and the baffle 400 is arranged at the second focal point.
[0049] It can be understood that the reflector 200 with an elliptical or parabolic profile and the LED light source 300 placed at the first focal point and the baffle 400 placed at the second focal point can better converge light and achieve directional illumination. This design method can maximize the efficiency of the light source and improve the lighting effect.
[0050] It should be noted that, in addition to the above-mentioned arrangement of the baffle 400 at the second focal point, other arrangement methods can be used according to actual needs, for example, referring to Figure 5The baffle 400 is arranged between the reflector 200 and the LED light source 300, is arranged close to the first focal point and can shield part of light emitted by the LED light source 300, thereby controlling the light distribution on the reflector 200, the reflector 200 reflects the light not shielded by the baffle 400 to the lens 100, and then the lens 100 projects the bright-dark cutoff line and the light distribution meeting the light distribution standard. Part of the light not shielded by the baffle 400 can fall on the light scattering part 210, the initial propagation direction and illumination intensity of the light after reflection are changed through the scattering treatment of the light scattering part 210, the image of the light scattering part 210 is finally located near the cutoff line region through the imaging principle of the lens 100, the light reaching the cutoff line region is more soft and uniform, the overall brightness ratio of the cutoff line region is reduced, and thus the sharpness of the low beam cutoff line is reduced.
[0051] It can be understood that, compared with the mode that the baffle 400 is arranged at the second focal point, the baffle 400 is arranged close to the first focal point to deviate from the second focal point, the energy is prevented from being totally converged on the baffle 400 by the reflector 200, the energy density borne by the baffle 400 is reduced, the hot spot region on the baffle 400 is reduced, the risk of thermal deformation or melting caused by excessive energy concentration is effectively avoided, the service life of the baffle 400 is improved, the requirement for the heat resistance of the material of the baffle 400 is reduced, and the manufacturing cost is reduced.
[0052] Referring to Figure 6 According to the vehicle lamp, the lens 100 is connected to the front end of the main body 500, the reflector 200 is connected to the main body 500, the circuit board 600 is arranged on the main body 500 and located below the reflector 200, the LED light source 300 is arranged on the circuit board 600, and the heat sink 700 is connected to the rear end of the main body 500 and used for heat dissipation of the vehicle lamp, thereby prolonging the service life of the vehicle lamp. Since the vehicle lamp adopts all the technical solutions, the same beneficial effects should be obtained, and details are not repeated here.
[0053] According to the vehicle, the vehicle lamp adopts all the technical solutions, and the same beneficial effects should be obtained, and details are not repeated here.
[0054] The embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range of ordinary skilled in the art without departing from the purpose of the utility model.
Claims
1. An optical structure for reducing the sharpness of a low beam cutoff line, characterized in that, The application relates to a low-beam cutoff line sharpness reducing optical structure, which comprises the following parts: a lens; a mirror located behind the lens; an LED light source located below the mirror, the LED light source emitting light to the inner surface of the mirror to be reflected to the lens; a baffle capable of shielding part of the light to form a cutoff line area on the lens, the inner surface of the mirror being provided with a light scattering part capable of scattering the light to the cutoff line area, the surface of the light scattering part being provided with patterns to constitute scattering of the light.
2. The optical structure for reducing the sharpness of the low beam cutoff according to claim 1, characterized in that, The patterns comprise a plurality of stripes protruding outward from the surface of the light scattering part.
3. The optical structure for reducing the sharpness of the cut-off line of the low beam according to claim 2, characterized in that, The light scattering part is provided with a plurality of groups of the stripes, and the distances between the stripes in the same group are equal.
4. The optical structure for reducing the sharpness of the cut-off line of the low beam according to claim 3, characterized in that, The light scattering part is provided with two groups of the stripes intersecting with each other to divide the surface of the light scattering part into a plurality of prismatic parts.
5. The optical structure to reduce the sharpness of the cut-off line of the low beam according to claim 1, characterized in that, The patterns comprise skin patterns distributed on the surface of the light scattering part.
6. The optical structure to reduce the sharpness of the cut-off line of a low beam according to claim 1, characterized in that, The light scattering part is a rectangular area arranged at the bottom of the inner surface of the mirror and symmetrically distributed with respect to the center line of the mirror.
7. The optical structure to reduce the sharpness of the cut-off line of a low beam according to claim 1, characterized in that, The inner surface of the mirror has an elliptical profile or a parabolic profile, the mirror has a first focal point and a second focal point, the LED light source is arranged at the first focal point, and the baffle is arranged at the second focal point.
8. A vehicle lamp characterized by The application further relates to a vehicle lamp comprising the low-beam cutoff line sharpness reducing optical structure as claimed in any one of claims 1 to 7, and further comprising a main body, a circuit board and a heat sink, the lens being connected to the front end of the main body, the mirror being connected to the main body, the circuit board being arranged on the main body and below the mirror, the LED light source being arranged on the circuit board, and the heat sink being connected to the rear end of the main body.
9. An automobile characterized by comprising: The application further relates to a vehicle lamp comprising the low-beam cutoff line sharpness reducing optical structure as claimed in claim 8.